video upload not working - despite space upgrade

I've just subscribed for the space upgrade, and the new space is confirmed as available. But when I try to upload a youtube video I get a rectangular white screen superimposed over my blog. I have loaded the URL and/or embed as required, so the fault lies elsewhere.

mark: I'm trying to put the youtube video itself on my blog and I follow the instructions given. i.e I cut and paste the URL and press 'insert' as directed. But all I get is the 'frozen' white screen, which I can't even close using the tab on the top right hand corner.

i'm also having the same trouble with google video. which is driving me insane b/c it took google months to fix THEIR uploader and now that it finally works and i have my video on their site, i can't get wordpress to upload the link!! aauuuughhhh!!

From Raincoaster: "Try not using the uploader at all. Use the old skool [ youtube = URL ] and so on. Instructions in the FAQ. I used it just yesterday and it never fails. Works every time."

I've tried new school, old school....no luck. Oddly, I've never had a problem in my previous 36 posts of uploading anything. Same for my wife. However, several days ago my wife got the frozen white screen. Finally, hours later she was able to post an image. Now, apparently, it's my turn. I try to bring over a video from You Tube (using the embed code)..............nothing. I've tried it using the actual URL.............nothing. Nothing, that is, but the frozen white screen. Wish I could figure this out. As I said, I've never had a problem before.